| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5449208 | Optics Communications | 2017 | 6 Pages |
Abstract
In this article, we numerically investigate the tight focusing of a quasi-cylindrical optical vortex with azimuthal polarization and a wavelength of 532 nm using a Fresnel zone plate with a numerical aperture of NA = 0.95. It is shown that the focal spot produced by a beam with six sectors does not differ from the ideally azimuthally polarized optical vortex; a difference in the focal spot diameter does not exceed 0.001 of the wavelength.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
S.S. Stafeev, V.V. Kotlyar,